Year	% of total population
1960	6.88170676841313
1961	7.07104074787632
1962	7.25622391514818
1963	7.43899924538041
1964	7.66179998616417
1965	7.92301108866105
1966	8.18010602559681
1967	8.43408505781682
1968	8.6794367123543
1969	8.8948802362485
1970	9.08200484338805
1971	9.24222202840262
1972	9.42335215544277
1973	9.63105188762735
1974	9.84313121171128
1975	10.0206372772642
1976	10.1463904850102
1977	10.2613582206336
1978	10.3695349571786
1979	10.4700446717607
1980	10.4192338259666
1981	10.1505521809639
1982	9.80027316964945
1983	9.425882645066
1984	9.26703226816755
1985	9.32866757303066
1986	9.45710398652397
1987	9.66008828006908
1988	9.87292982000831
1989	10.0528710647815
1990	10.185980474426
1991	10.3015940698756
1992	10.4099809643443
1993	10.5185227080873
1994	10.6414424485152
1995	10.775614526103
1996	10.9118227852212
1997	11.0470162206064
1998	11.1485668479555
1999	11.2194153987244
2000	11.2836067621164
2001	11.346880858588
2002	11.4192088638091
2003	11.5035318987294
2004	11.6051733134038
2005	11.7281375845933
2006	11.869733062649
2007	12.0189120073658
2008	12.173148850382
2009	12.3582312729632
2010	12.5318173664634
2011	12.708990048364
2012	12.9902139534746
2013	13.3627770424392
2014	13.7734199896708
2015	14.2236868678443
2016	14.7326646847241
2017	15.2655896087384
2018	15.7882261985621
2019	16.3162889691899
2020	16.8241845935455
2021	17.228443897172
2022	16.977513589641
2023	16.9421101846546